How to see the PATH directories of Windows image? I want to know what programs I can run on the container.

One way to see the PATH directories of a Windows image is to run the CMD shell interactively. Then run the SET sub-command in the shell.

C:\fyicenter> docker run --name windows --entrypoint cmd
   --tty --interactive microsoft/dotnet-samples

Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.

C:\app>dir

C:\app>set
ALLUSERSPROFILE=C:\ProgramData
APPDATA=C:\Users\ContainerAdministrator\AppData\Roaming
ASPNETCORE_URLS=http://+:80
CommonProgramFiles=C:\Program Files\Common Files
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
CommonProgramW6432=C:\Program Files\Common Files
COMPUTERNAME=E78F8A122016
ComSpec=C:\windows\system32\cmd.exe
DOTNET_RUNNING_IN_CONTAINER=true
DOTNET_VERSION=2.2.2
LOCALAPPDATA=C:\Users\ContainerAdministrator\AppData\Local
NUMBER_OF_PROCESSORS=4
OS=Windows_NT

Path=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;
   C:\Windows\System32\WindowsPowerShell\v1.0\;
   C:\Users\ContainerAdministrator\AppData\Local\Microsoft\WindowsApps;
   C:\Program Files\dotnet;

PATHEXT=.COM;.EXE;.BAT;.CMD
PROCESSOR_ARCHITECTURE=AMD64
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 79 Stepping 1, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=4f01
ProgramData=C:\ProgramData
ProgramFiles=C:\Program Files
ProgramFiles(x86)=C:\Program Files (x86)
ProgramW6432=C:\Program Files
PROMPT=$P$G
PUBLIC=C:\Users\Public
SystemDrive=C:
SystemRoot=C:\windows
TEMP=C:\Users\ContainerAdministrator\AppData\Local\Temp
TMP=C:\Users\ContainerAdministrator\AppData\Local\Temp
USERDOMAIN=User Manager
USERNAME=ContainerAdministrator
USERPROFILE=C:\Users\ContainerAdministrator
windir=C:\windows

C:\app>exit

C:\fyicenter> docker rm windows

As you can see, the PATH directories include standard Windows programs, PowerShell tools and .NET tools.

⇒ Build a Dummy Windows Image

⇐ Commands Available on Windows Container

⇑ Building Docker Images for Windows

⇑⇑ Docker Container Platform - Tutorials